Blue Trevally
Ferdauia orthogrammus
- Usual depth5–31 m
- Water temperature20–30 °C
- Best monthsMarch, April, and September
- How commonOccasional
About this species
The island trevally, island jack, thicklip trevally or false bluefin trevally is a widespread species of offshore marine ray-finned fish classified in the jack family Carangidae. The island trevally is common through the tropical regions of the Indian and Pacific Oceans, ranging from Mozambique and the Seychelles in the west to Hawaii and the Revillagigedo Islands in the central and eastern Pacific. The species is almost completely absent from the continental shelves, instead inhabiting offshore islands, where it is found in lagoons and on reef systems. It is a moderately large fish, growing to a maximum recorded length of 75 cm and 6.6 kg in weight, and is distinguishable by its angular snout and yellow spots, as well as more detailed anatomical features. The island trevally often moves in small schools, preying on a variety of small fishes and crustaceans. It is of moderate importance to fisheries throughout its range, often taken by trawls, hook-and-line, and various inshore netting methods, and is sold fresh or salted at market.
Text from the Wikipedia article “Island trevally”, licensed CC BY-SA 4.0. Read the article
Where and when
Where it has been recorded
Worldwide
Loading the map
Best months
Worldwide (open data)
- January: 84 records
- February: 109 records
- March: 137 records
- April: 174 records
- May: 77 records
- June: 117 records
- July: 51 records
- August: 95 records
- September: 164 records
- October: 85 records
- November: 8 records
- December: 24 records
Depth and water temperature
Depth
Mostly recorded at 5–31 m · Deepest record: 115 m
Water temperature
Recorded in surface water of 20–30 °C
Names and classification
- English
- Blue Trevally, False Bluefin Trevally, island jack, Island Trevally, Thicklip Trevally, Yellow-spot Trevally, Yellowspot Trevally
Names in 6 more languages
- German
- Dicklippen-Makrele
- Spanish
- jurel isleño
- Filipino
- Talakitok
- French
- Carangue à points jaunes, Carangue des îles, Carangue tachetée
- Japanese
- Nan-yokaiwari, ナンヨウカイワリ
- Simplified Chinese
- 直線若鰺
Other scientific names: Carangoides jordani, Carangoides nitidus, Carangoides orthogrammus, Carangoides orthogrammuus, Carangoides othogrammus, Caranx orthogrammus
Similar species
- Banded Trevally
Ferdauia ferdau
Giant trevallyCaranx ignobilis
Bluefin trevallyCaranx melampygus
Bigeye trevallyCaranx sexfasciatus
Mackerel scadDecapterus macarellus
Indian scadDecapterus russelli
Sources and credits
Names and taxonomy: WoRMS (CC BY 4.0) and the GBIF Backbone (CC BY 4.0). Photos: iNaturalist observers, each under the licence shown (CC0, CC BY or CC BY-SA).
- Depth, temperature, months and maps: records from OBIS and GBIF under CC0 or CC BY.
- Descriptions: Wikipedia, licensed CC BY-SA, each linked to its article.
- Conservation status as published by GBIF (IUCN Red List).
- 1,225 open-data records from 1882 to 2024.
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